Fix compile error in Google3 build.

tests/RectangleTextureTest.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "Test.h"
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
@@ skipping 86 matching lines @@
         // Clear the whole thing.
         GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD);
         dc->clear(nullptr, color0, false);
 
         int w = rectangleTexture->width();
         int h = rectangleTexture->height();
         int pixelCnt = w * h;
         SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt);
 
         // The clear color is a GrColor, our readback is to kRGBA_8888, which may be different.
-        uint32_t expectedColor0;
+        uint32_t expectedColor0 = 0;
         uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0);
         expectedBytes0[0] = GrColorUnpackR(color0);
         expectedBytes0[1] = GrColorUnpackG(color0);
         expectedBytes0[2] = GrColorUnpackB(color0);
         expectedBytes0[3] = GrColorUnpackA(color0);
         for (int i = 0; i < rectangleTexture->width() * rectangleTexture->height(); ++i) {
             expectedPixels.get()[i] = expectedColor0;
         }
 
         // Clear the the top to a different color.
         GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4);
         SkIRect rect = SkIRect::MakeWH(w, h/2);
         dc->clear(&rect, color1, false);
 
-        uint32_t expectedColor1;
+        uint32_t expectedColor1 = 0;
         uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1);
         expectedBytes1[0] = GrColorUnpackR(color1);
         expectedBytes1[1] = GrColorUnpackG(color1);
         expectedBytes1[2] = GrColorUnpackB(color1);
         expectedBytes1[3] = GrColorUnpackA(color1);
 
         for (int y = 0; y < h/2; ++y) {
             for (int x = 0; x < w; ++x) {
                 expectedPixels.get()[y * h + x] = expectedColor1;
             }
@@ skipping 64 matching lines @@
 
         test_write_pixels(reporter, context, rectangleTexture);
 
         test_clear(reporter, context, rectangleTexture);
 
         GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID));
     }
 }
 
 #endif