Switch from PrintTo to operator<< for platform printers

third_party/WebKit/Source/platform/testing/PictureMatchers.cpp

Index: third_party/WebKit/Source/platform/testing/PictureMatchers.cpp
diff --git a/third_party/WebKit/Source/platform/testing/PictureMatchers.cpp b/third_party/WebKit/Source/platform/testing/PictureMatchers.cpp
index 5b84442d9babee1bb297df6a1b075b02b5206022..93b1aca25078c79735d2107f74abb39fc32e7060 100644
--- a/third_party/WebKit/Source/platform/testing/PictureMatchers.cpp
+++ b/third_party/WebKit/Source/platform/testing/PictureMatchers.cpp
@@ -50,8 +50,7 @@ public:
         const FloatQuad& quad = quads[0].first;
         if (!quad.isRectilinear()) {
             if (listener->IsInterested()) {
-                *listener << "which draws ";
-                PrintTo(quad, listener->stream());
+                *listener << "which draws " << quad;
                 *listener << " with color " << quads[0].second.serialized().ascii().data();
             }
             return false;
@@ -60,8 +59,7 @@ public:
         const FloatRect& rect = quad.boundingBox();
         if (rect != m_rect || quads[0].second != m_color) {
             if (listener->IsInterested()) {
-                *listener << "which draws ";
-                PrintTo(rect, listener->stream());
+                *listener << "which draws " << rect;
                 *listener << " with color " << quads[0].second.serialized().ascii().data();
             }
             return false;
@@ -72,9 +70,7 @@ public:
 
     void DescribeTo(::std::ostream* os) const override
     {
-        *os << "draws ";
-        PrintTo(m_rect, os);
-        *os << " with color " << m_color.serialized().ascii().data();
+        *os << "draws " << m_rect << " with color " << m_color.serialized().ascii().data();
     }
 
 private: