ImageCapture: introduce image_capture Blob to allow move-only semantics

media/capture/video/fake_video_capture_device_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/capture/video/fake_video_capture_device.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
@@ skipping 133 matching lines @@
   MOCK_METHOD1(OnGetPhotoCapabilitiesFailure,
                void(const base::Callback<void(mojom::PhotoCapabilitiesPtr)>&));
 
   const mojom::PhotoCapabilities* capabilities() { return capabilities_.get(); }
 
   MOCK_METHOD1(OnCorrectSetPhotoOptions, void(bool));
   MOCK_METHOD1(OnSetPhotoOptionsFailure,
                void(const base::Callback<void(bool)>&));
 
   // GMock doesn't support move-only arguments, so we use this forward method.
-  void DoOnPhotoTaken(const std::string& mime_type,
-                      const std::vector<uint8_t>& data) {
+  void DoOnPhotoTaken(mojom::BlobPtr blob) {
     // Only PNG images are supported right now.
-    EXPECT_STREQ("image/png", mime_type.c_str());
+    EXPECT_STREQ("image/png", blob->mime_type.c_str());
     // Not worth decoding the incoming data. Just check that the header is PNG.
     // http://www.libpng.org/pub/png/spec/1.2/PNG-Rationale.html#R.PNG-file-signature
-    ASSERT_GT(data.size(), 4u);
-    EXPECT_EQ('P', data[1]);
-    EXPECT_EQ('N', data[2]);
-    EXPECT_EQ('G', data[3]);
+    ASSERT_GT(blob->data.size(), 4u);
+    EXPECT_EQ('P', blob->data[1]);
+    EXPECT_EQ('N', blob->data[2]);
+    EXPECT_EQ('G', blob->data[3]);
     OnCorrectPhotoTaken();
   }
   MOCK_METHOD0(OnCorrectPhotoTaken, void(void));
   MOCK_METHOD1(OnTakePhotoFailure,
-               void(const base::Callback<void(const std::string&,
-                                              const std::vector<uint8_t>&)>&));
+               void(const base::Callback<void(mojom::BlobPtr)>&));
 
  private:
   friend class base::RefCounted<ImageCaptureClient>;
   virtual ~ImageCaptureClient() {}
 
   mojom::PhotoCapabilitiesPtr capabilities_;
 };
 
 }  // namespace
 
@@ skipping 240 matching lines @@
   }
 }
 
 INSTANTIATE_TEST_CASE_P(,
                         FakeVideoCaptureDeviceCommandLineTest,
                         Values(CommandLineTestData{"fps=-1", 5},
                                CommandLineTestData{"fps=29.97", 29.97f},
                                CommandLineTestData{"fps=60", 60},
                                CommandLineTestData{"fps=1000", 60}));
 };  // namespace media