Change the media::PowerLineFrequency from an enum class to a proper class

media/base/video_capture_types.cc

Index: media/base/video_capture_types.cc
diff --git a/media/base/video_capture_types.cc b/media/base/video_capture_types.cc
index 0bc6ae639511625fe34fa214aacb01fd65d860d9..f549f84234c665c6d856e68f27ae7bfeb71d14de 100644
--- a/media/base/video_capture_types.cc
+++ b/media/base/video_capture_types.cc
@@ -11,6 +11,35 @@
 
 namespace media {
 
+  void PowerLineFrequency::check(int freq)

[wolenetz, 2015/09/09 19:39:15]

nit: remember to follow the updated declaration order here in the impl, too.

[suvanjanmukherjee, 2015/09/13 15:33:46]

Done.

+  {

[ajose, 2015/09/10 17:24:55]

Move open curly brace to the end of the same line as the last parameter: 
http://google-styleguide.googlecode.com/svn/trunk/cppguide.html#Function_Decl...

[suvanjanmukherjee, 2015/09/13 15:33:46]

Done.

+    DCHECK(freq >= FREQUENCY_DEFAULT && freq <= FREQUENCY_MAX);
+  }
+
+  PowerLineFrequency::PowerLineFrequency(int freq)
+  {
+    check(freq);
+    freq_ =  freq;

[wolenetz, 2015/09/09 19:39:15]

nit: s/  / /

[suvanjanmukherjee, 2015/09/13 15:33:46]

Done.

+  }
+
+  PowerLineFrequency& PowerLineFrequency::operator= (int freq)
+  {
+    check(freq);
+    freq_ = freq;
+    return *this;
+  }
+
+  PowerLineFrequency& PowerLineFrequency::operator= (
+    const PowerLineFrequency& rhs)
+  {
+    freq_ = rhs.freq_;
+    return *this;
+  }
+
+  PowerLineFrequency::operator int() const {
+    return freq_;
+  }
+
 // This list is ordered by precedence of use.
 static VideoPixelFormat const kSupportedCapturePixelFormats[] = {
     PIXEL_FORMAT_I420,