Fix crashes when loading gles2.cc on browser startup, and during playback.

content/common/gpu/media/gles2_texture_to_egl_image_translator.cc

Index: content/common/gpu/media/gles2_texture_to_egl_image_translator.cc
diff --git a/content/common/gpu/media/gles2_texture_to_egl_image_translator.cc b/content/common/gpu/media/gles2_texture_to_egl_image_translator.cc
index a3049569a14bcebd80bb526658acfe92a3bcb836..057092d7ba54d38fb897a1b01e92b46de715d3f5 100644
--- a/content/common/gpu/media/gles2_texture_to_egl_image_translator.cc
+++ b/content/common/gpu/media/gles2_texture_to_egl_image_translator.cc
@@ -23,6 +23,7 @@ Gles2TextureToEglImageTranslator::Gles2TextureToEglImageTranslator() {
     LOG(DFATAL) << "Failed to get EGL extensions";
     return;
   }
+  CHECK_EQ(eglGetError(), EGL_SUCCESS);
 }
 
 
@@ -41,7 +42,7 @@ EGLImageKHR Gles2TextureToEglImageTranslator::TranslateToEglImage(
       EGL_GL_TEXTURE_2D_KHR,
       reinterpret_cast<EGLClientBuffer>(texture),
       &attrib);
-  CHECK(hEglImage);
+  CHECK(hEglImage) << eglGetError();
   return hEglImage;
 }