Add media size capability to PDF printer.

components/cloud_devices/common/printer_description.cc

Index: components/cloud_devices/common/printer_description.cc
diff --git a/components/cloud_devices/common/printer_description.cc b/components/cloud_devices/common/printer_description.cc
index 86977958a7d5dce87c7c8dbf6be0b022494ab800..2f70fa6ce7722082b98311752e771f9f91c3c1ac 100644
--- a/components/cloud_devices/common/printer_description.cc
+++ b/components/cloud_devices/common/printer_description.cc
@@ -162,7 +162,7 @@ const int32 kSizeTrasholdUm = 1000;
         static_cast<int>(height* unit_um + 0.5)                  \
   }
 
-const struct MadiaDefinition {
+const struct MediaDefinition {
   MediaType id;
   const char* const json_name;
   int width_um;
@@ -335,8 +335,17 @@ const struct MadiaDefinition {
       MAP_CLOUD_PRINT_MEDIA_TYPE(OM_INVITE, 220, 220, kMmToUm)};
 #undef MAP_CLOUD_PRINT_MEDIA_TYPE
 
-const MadiaDefinition* FindMediaBySize(int32 width_um, int32 height_um) {
-  const MadiaDefinition* result = NULL;
+const MediaDefinition& FindMediaByType(MediaType type) {
+  for (size_t i = 0; i < arraysize(kMediaDefinitions); ++i) {
+    if (kMediaDefinitions[i].id == type)
+      return kMediaDefinitions[i];
+  }
+  NOTREACHED();
+  return kMediaDefinitions[0];
+}
+
+const MediaDefinition* FindMediaBySize(int32 width_um, int32 height_um) {
+  const MediaDefinition* result = NULL;
   for (size_t i = 0; i < arraysize(kMediaDefinitions); ++i) {
     int32 diff = std::max(std::abs(width_um - kMediaDefinitions[i].width_um),
                           std::abs(height_um - kMediaDefinitions[i].height_um));
@@ -432,6 +441,17 @@ Media::Media()
     : type(CUSTOM_MEDIA), width_um(0), height_um(0), is_continuous_feed(false) {
 }
 
+Media::Media(MediaType type)
+    : type(type),
+      width_um(0),
+      height_um(0),
+      is_continuous_feed(false) {
+  const MediaDefinition& media = FindMediaByType(type);
+  width_um = media.width_um;
+  height_um = media.height_um;
+  is_continuous_feed = width_um <= 0 || height_um <= 0;
+}
+
 Media::Media(MediaType type, int32 width_um, int32 height_um)
     : type(type),
       width_um(width_um),
@@ -450,7 +470,7 @@ Media::Media(const std::string& custom_display_name,
 }
 
 bool Media::MatchBySize() {
-  const MadiaDefinition* media = FindMediaBySize(width_um, height_um);
+  const MediaDefinition* media = FindMediaBySize(width_um, height_um);
   if (!media)
     return false;
   type = media->id;