Add bool code_coverage flag argument for BuildTargetUnitTestRequest.

Add a boolean code_coverage flag argument for calls to
BuildTargetUnitTestRequest to get the right handling to occur on the
backend without requiring direct use flag manipulation in the client
recipe.

BUG=b:161462144
TEST=./generate.sh

Change-Id: I4e45bf6709165b4201b3a7ee2f3cd3e394508eff
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2321369
Reviewed-by: Alex Klein <saklein@chromium.org>
Commit-Queue: David Burger <dburger@chromium.org>
Tested-by: David Burger <dburger@chromium.org>
diff --git a/go/chromite/api/test.pb.go b/go/chromite/api/test.pb.go
index 884b755..d9e86e4 100644
--- a/go/chromite/api/test.pb.go
+++ b/go/chromite/api/test.pb.go
@@ -147,7 +147,9 @@
 	// Assume the sysroot is empty.
 	EmptySysroot bool `protobuf:"varint,1,opt,name=empty_sysroot,json=emptySysroot,proto3" json:"empty_sysroot,omitempty"`
 	// Whether a toolchain change has occurred.
-	ToolchainChanged     bool     `protobuf:"varint,2,opt,name=toolchain_changed,json=toolchainChanged,proto3" json:"toolchain_changed,omitempty"`
+	ToolchainChanged bool `protobuf:"varint,2,opt,name=toolchain_changed,json=toolchainChanged,proto3" json:"toolchain_changed,omitempty"`
+	// Whether to produce code coverage data.
+	CodeCoverage         bool     `protobuf:"varint,3,opt,name=code_coverage,json=codeCoverage,proto3" json:"code_coverage,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -192,6 +194,13 @@
 	return false
 }
 
+func (m *BuildTargetUnitTestRequest_Flags) GetCodeCoverage() bool {
+	if m != nil {
+		return m.CodeCoverage
+	}
+	return false
+}
+
 type BuildTargetUnitTestResponse struct {
 	// The unittest tarball that was created.
 	TarballPath string `protobuf:"bytes,1,opt,name=tarball_path,json=tarballPath,proto3" json:"tarball_path,omitempty"`
@@ -1003,75 +1012,77 @@
 func init() { proto.RegisterFile("chromite/api/test.proto", fileDescriptor_f5c91b4ac6233d9e) }
 
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+	0x7f, 0x56, 0x60, 0xf5, 0xeb, 0xe8, 0xff, 0x1a, 0x21, 0xd7, 0x70, 0x09, 0xed, 0xc2, 0xca, 0x30,
+	0x92, 0xb5, 0x2b, 0xc7, 0x89, 0x5e, 0xac, 0x4a, 0x3e, 0x70, 0xaa, 0xc3, 0x48, 0x14, 0xf2, 0x0b,
+	0xd0, 0x18, 0x1b, 0xb8, 0x34, 0xe1, 0x01, 0x8d, 0xc7, 0x23, 0xe5, 0x51, 0x31, 0x3d, 0x85, 0x20,
+	0xec, 0x0e, 0x1b, 0xbc, 0x96, 0x68, 0x07, 0xd8, 0xe4, 0x1b, 0x7d, 0x09, 0xf5, 0xec, 0xb1, 0xdd,
+	0x01, 0x4e, 0x63, 0xc2, 0x98, 0xb1, 0xbc, 0x55, 0xda, 0x69, 0xec, 0x7d, 0xb0, 0x88, 0x29, 0xfb,
+	0xfe, 0x42, 0xc2, 0x1d, 0x8d, 0x4f, 0x0f, 0xe8, 0x33, 0xa8, 0x0d, 0x23, 0x37, 0x93, 0x8c, 0xa7,
+	0x8a, 0xb5, 0x88, 0x47, 0x9d, 0x56, 0x86, 0xe2, 0x2f, 0x33, 0x7f, 0x00, 0x98, 0x3a, 0x89, 0x9e,
+	0x82, 0x9e, 0xa4, 0xc1, 0x10, 0x73, 0xe2, 0x9e, 0x92, 0xd1, 0xb4, 0xa3, 0xe7, 0x65, 0xa5, 0xa1,
+	0x90, 0x5f, 0x91, 0x91, 0xc8, 0x0e, 0x82, 0x4a, 0x42, 0x53, 0x99, 0xf2, 0x65, 0x47, 0x7c, 0x9b,
+	0x16, 0x54, 0xe5, 0x85, 0xc8, 0x80, 0x95, 0x04, 0x73, 0x4e, 0xd2, 0x58, 0x8d, 0x88, 0xf1, 0xd1,
+	0x7a, 0x02, 0x5a, 0x2e, 0x38, 0x74, 0x13, 0xb4, 0xe3, 0x57, 0x9d, 0xf6, 0x61, 0xeb, 0xe8, 0xf9,
+	0xd1, 0xe1, 0x81, 0xfe, 0x1e, 0xaa, 0x41, 0xa5, 0xfb, 0xac, 0xd3, 0xd5, 0x4b, 0xa8, 0x0e, 0xb5,
+	0x67, 0xc7, 0xdd, 0xd7, 0xdd, 0xc3, 0x4e, 0x57, 0x2f, 0x5b, 0x3a, 0x34, 0xc6, 0xa1, 0xa9, 0x22,
+	0xfa, 0xbd, 0x0c, 0xb7, 0x5f, 0xd2, 0x5e, 0x88, 0x7b, 0xc5, 0x52, 0xba, 0x46, 0xc7, 0xa0, 0x57,
+	0xb0, 0x1a, 0x44, 0xd9, 0xa0, 0x4f, 0xf0, 0x28, 0xa4, 0xf8, 0x44, 0x55, 0xd0, 0x6e, 0x31, 0xa7,
+	0x73, 0x6e, 0xb1, 0xdb, 0xd2, 0xc0, 0xa9, 0x0b, 0x7b, 0x75, 0x42, 0x6d, 0x68, 0x78, 0xd8, 0x1b,
+	0x4c, 0xf8, 0xc6, 0x23, 0xec, 0x1a, 0x84, 0xab, 0x82, 0x40, 0x9d, 0x98, 0xd9, 0x84, 0x95, 0x31,
+	0xf9, 0x03, 0xa8, 0x2c, 0x7c, 0x22, 0xa1, 0xb5, 0xd6, 0xe1, 0x4e, 0x91, 0x5e, 0xa5, 0xeb, 0x8f,
+	0x12, 0x6c, 0x76, 0x82, 0x28, 0x09, 0x89, 0x98, 0x41, 0xe4, 0x1b, 0x9a, 0x9e, 0xf6, 0x43, 0xfa,
+	0xcb, 0x7f, 0x9a, 0x06, 0x9b, 0xa0, 0x09, 0x00, 0x71, 0x27, 0xfd, 0x77, 0xc3, 0x01, 0x29, 0x72,
+	0x32, 0xc0, 0x27, 0xa0, 0xf9, 0x34, 0xc2, 0xae, 0x47, 0xe3, 0x7e, 0xe0, 0xab, 0x9e, 0x5b, 0xcf,
+	0xbb, 0xfe, 0x82, 0x46, 0xb8, 0x25, 0xb4, 0x0e, 0xf8, 0x93, 0x6f, 0xcb, 0x82, 0xad, 0x8b, 0xbd,
+	0x95, 0x21, 0xed, 0xfd, 0x55, 0x95, 0xc5, 0xd4, 0x21, 0xe9, 0x30, 0xf0, 0x08, 0x4a, 0xe1, 0xf6,
+	0x9c, 0xe5, 0x85, 0x76, 0xae, 0xfa, 0x33, 0xc0, 0xdc, 0xbd, 0x02, 0x52, 0xa5, 0xb3, 0xfa, 0xe6,
+	0xad, 0x59, 0xd6, 0xcb, 0x08, 0x83, 0x3e, 0xbb, 0x34, 0xd0, 0xc3, 0x22, 0xcd, 0x05, 0xbb, 0xc9,
+	0x7c, 0x74, 0x19, 0x4c, 0x2d, 0xdd, 0xef, 0xa1, 0x51, 0x5c, 0x1b, 0x68, 0x7b, 0xbe, 0x65, 0x61,
+	0x33, 0x99, 0x0f, 0x16, 0x83, 0x14, 0xf9, 0x4f, 0x70, 0x73, 0x66, 0x67, 0xa0, 0x59, 0xc3, 0xb9,
+	0x8b, 0xc9, 0x7c, 0x78, 0x09, 0x4a, 0xf1, 0x7f, 0x0b, 0xab, 0x85, 0x1d, 0x80, 0x66, 0xe6, 0xd5,
+	0xbc, 0xad, 0x64, 0x6e, 0x2f, 0xc4, 0x28, 0xe6, 0xd6, 0x64, 0xda, 0xdc, 0x5d, 0x30, 0x02, 0xcd,
+	0x7b, 0xf3, 0x95, 0x8a, 0xe4, 0x47, 0xa8, 0xe7, 0xbb, 0x05, 0xdd, 0xbf, 0xb4, 0x51, 0x4d, 0x6b,
+	0x11, 0x64, 0xa6, 0x3a, 0x7e, 0x2b, 0x81, 0x71, 0x51, 0x19, 0xa3, 0x8f, 0x67, 0x9a, 0x6b, 0x71,
+	0x73, 0x9a, 0xf6, 0x55, 0xe1, 0x45, 0x1f, 0xcc, 0xfa, 0x9b, 0xb7, 0x66, 0x0d, 0x2a, 0xd9, 0xab,
+	0xeb, 0xa5, 0xfd, 0x4f, 0xbf, 0x7b, 0xe2, 0xd3, 0x49, 0xff, 0xd9, 0x34, 0xf5, 0x9b, 0xb9, 0x9f,
+	0xfd, 0x41, 0xdc, 0x4f, 0x71, 0x53, 0xfc, 0xe8, 0x6f, 0xfa, 0xb4, 0x99, 0xff, 0x2f, 0xa2, 0x57,
+	0x15, 0xe2, 0xc7, 0xff, 0x06, 0x00, 0x00, 0xff, 0xff, 0xa9, 0x53, 0x26, 0x1b, 0xa1, 0x0c, 0x00,
+	0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/src/chromite/api/test.proto b/src/chromite/api/test.proto
index 40a3fcc..b54f74b 100644
--- a/src/chromite/api/test.proto
+++ b/src/chromite/api/test.proto
@@ -16,6 +16,8 @@
     bool empty_sysroot = 1;
     // Whether a toolchain change has occurred.
     bool toolchain_changed = 2;
+    // Whether to produce code coverage data.
+    bool code_coverage = 3;
    }
 
   // The build target being tested.